[PATCH net v3 1/3] esp, ah: consolidate the crypto algorithm selections

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From: Eric Biggers <ebiggers@xxxxxxxxxx>

Instead of duplicating the algorithm selections between INET_AH and
INET6_AH and between INET_ESP and INET6_ESP, create new tristates
XFRM_AH and XFRM_ESP that do the algorithm selections, and make these be
selected by the corresponding INET* options.

Suggested-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Cc: Corentin Labbe <clabbe@xxxxxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Steffen Klassert <steffen.klassert@xxxxxxxxxxx>
Signed-off-by: Eric Biggers <ebiggers@xxxxxxxxxx>
---
 net/ipv4/Kconfig | 16 ++--------------
 net/ipv6/Kconfig | 16 ++--------------
 net/xfrm/Kconfig | 20 ++++++++++++++++++++
 3 files changed, 24 insertions(+), 28 deletions(-)

diff --git a/net/ipv4/Kconfig b/net/ipv4/Kconfig
index 23ba5045e3d3c1..39a7a21744dc03 100644
--- a/net/ipv4/Kconfig
+++ b/net/ipv4/Kconfig
@@ -340,11 +340,7 @@ config NET_FOU_IP_TUNNELS
 
 config INET_AH
 	tristate "IP: AH transformation"
-	select XFRM_ALGO
-	select CRYPTO
-	select CRYPTO_HMAC
-	select CRYPTO_MD5
-	select CRYPTO_SHA1
+	select XFRM_AH
 	---help---
 	  Support for IPsec AH.
 
@@ -352,15 +348,7 @@ config INET_AH
 
 config INET_ESP
 	tristate "IP: ESP transformation"
-	select XFRM_ALGO
-	select CRYPTO
-	select CRYPTO_AUTHENC
-	select CRYPTO_HMAC
-	select CRYPTO_MD5
-	select CRYPTO_CBC
-	select CRYPTO_SHA1
-	select CRYPTO_DES
-	select CRYPTO_ECHAINIV
+	select XFRM_ESP
 	---help---
 	  Support for IPsec ESP.
 
diff --git a/net/ipv6/Kconfig b/net/ipv6/Kconfig
index 4f03aece2980fb..70313f16319dd2 100644
--- a/net/ipv6/Kconfig
+++ b/net/ipv6/Kconfig
@@ -49,11 +49,7 @@ config IPV6_OPTIMISTIC_DAD
 
 config INET6_AH
 	tristate "IPv6: AH transformation"
-	select XFRM_ALGO
-	select CRYPTO
-	select CRYPTO_HMAC
-	select CRYPTO_MD5
-	select CRYPTO_SHA1
+	select XFRM_AH
 	---help---
 	  Support for IPsec AH.
 
@@ -61,15 +57,7 @@ config INET6_AH
 
 config INET6_ESP
 	tristate "IPv6: ESP transformation"
-	select XFRM_ALGO
-	select CRYPTO
-	select CRYPTO_AUTHENC
-	select CRYPTO_HMAC
-	select CRYPTO_MD5
-	select CRYPTO_CBC
-	select CRYPTO_SHA1
-	select CRYPTO_DES
-	select CRYPTO_ECHAINIV
+	select XFRM_ESP
 	---help---
 	  Support for IPsec ESP.
 
diff --git a/net/xfrm/Kconfig b/net/xfrm/Kconfig
index b7fd9c83841605..169c22140709f7 100644
--- a/net/xfrm/Kconfig
+++ b/net/xfrm/Kconfig
@@ -67,6 +67,26 @@ config XFRM_STATISTICS
 
 	  If unsure, say N.
 
+config XFRM_AH
+	tristate
+	select XFRM_ALGO
+	select CRYPTO
+	select CRYPTO_HMAC
+	select CRYPTO_MD5
+	select CRYPTO_SHA1
+
+config XFRM_ESP
+	tristate
+	select XFRM_ALGO
+	select CRYPTO
+	select CRYPTO_AUTHENC
+	select CRYPTO_HMAC
+	select CRYPTO_MD5
+	select CRYPTO_CBC
+	select CRYPTO_SHA1
+	select CRYPTO_DES
+	select CRYPTO_ECHAINIV
+
 config XFRM_IPCOMP
 	tristate
 	select XFRM_ALGO
-- 
2.26.2




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